My Cadet IV Ramp top horizontal section outputs only two “full” outputs (no lines or seperations visible even when attenuated) and one output does not work at all - the trimmers do not seem to change anything either. The bottom (vertical) section puts out horizontal bars though which are a bit confusing as well - are not these supposed to be the other way round?

The trimmers can adjust the width and position of them well in that bottom section. I have taken photos of the outputs and the board as well.

I was going to add this too - it was basically a compensation of resistor values, since we did not have the proper ones and sorted out the problem this way. And to tell you the truth the bottom section does work, it is the upper section that does not.